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ihvrren Starts Pari-iar Orinta CHAR-LES J. VVILLIAMS, OF MILW'UKEE, WVISOONSIN, ASSIGNOR OF ONE- HALF TO JOHN C. IVERSON, OF SAME PLCE.

MACHINE FOR DOUBLE-SEAWHNG ELEVATOR-BUC KETS.

SPECIFIC'ATION forming part of Letters Patent No. 297,048, ate .April 15, 1884.

Application filcd February 18, 1884.

To all whom, it may con/coma:

Be it known that I, OHAnLEs J. WILLIAMs, a citizen of the United States residing at Milwaukee, in the countyof Milwaukee and State of Vtfisconsin, have invented certain new and useful Improvements in Machines for Double- Seaming Elevator-Buckets; and I do hereby declare the following to be a full, clear, and exact description of the invcntion, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawiugs, and to letters or figures of reference marked thereon, which form a part of this specification.

My iuvention rel'ates to improvements in machines for turning and swaging the seams of elevator-buckets.

Preparatory to using my machine, the bucket is cut and bent in proper shape, and the edges to be united are interlocked in position for swaging.

The construction and Operation of my machine are further explained by reference to the accompanying drawings, in which Figure l represents a side view of a droppress, with. which the buckets are adapted to Fig. 2 is a cross -section drawn on line xx of Fig. 1. Fig. 3 is a cross-section drawn on line g/y of Fig. 1. Fig. 4 is a side view of Fig. 1. Fig. 5 is a vertical section of the former for turning and swaging the seam. Fig. 6 is a side view of the punch or supporting block, npon which the bucket is held when acted upon by the former. Fig. 7 is a perspective View, part in section, of the former shown in Fig. 5. Fig. 8 represents the form of the joint or seam of the elevatorbucket, as joined, preparatory to being turned over and swaged. Fig. 9 represents the seam turned over and swaged. i

Like parts are repre'sented by the same reference-letters throughout the several Views.

A A are tubular colnmns,which are respectively provided with connecting-flanges B B and O O, and gnideways D D. The lower ends of the columns rest on a heavy solid base, E.

To the fianges B and O are rigidly bolted the cross-blocks F and G. To give the upper (No model.)

block F greater stablity, it is supported at its center by the block H, which rcsts upon said block G.

Upon the upper ends of the columns A A is mounted a cross-piece, I, which is provided with the cams or angular bearings J J, journal-standards K K, and shaft L, having pulleys M and N.

To the pulleyMisattachcdarope, O. From the lower end of the rope O are suspended nippers or grappling-tongs P, which are adapted to automz'itically eng-age the knob Q of the drop-block R as they are lowered, and to :raise said drop-block as they are drawn up by said rape. As the tongs P are drawn npward, the arms SS engage against the inner surface of the cams J J, whereby said arms are pressed toward each other, and the jaws ca separated and disengaged from the drop-block, thus permitting the drop-block to fall of its own gravity.

To the lower end of the drop-block R is attached that part of the die known as the former B, while the part known as the punch C' is attached to the bblock F. The four corners of the former, two of 75 i which, bb, are shown in Fig. 7, are rounded or made at an angle of about forty-five degrees to the sides and ends of the former, whereby, as said former closes down over the punch or block O, and in contact with the fianges d d of the bucket thereon, the angular or curved bearings of the corners b b gradually bend, overand compress the fianges dd until the same are pressed down upon the sicles of the bucket, as shown in Fig. 9.

In Operating the drop, power is applied to the shaft L in any ordinary manner desired. One method is shown inFig. 1, in which, by drawing down upon the rope A', the same acting through the pulley N, shaft L, and rope O, causes the drop-blockto be elevated until relieved, as mentioned, by contact of the arms S S with the bearings J J, when said dropblock falls with great force, with the former, npon the bucket. If desired, the rope A' may be attached at its lower ends to and operated by a treadle, when the drop will be operated by each downwa-rd pressure of a personis foot upon the treadle, and the operation repeated with each npward and downward movement of the treadle.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the eolumns A,-provided With the flanges B and O, and guide- Ways D D, of-the cross-blocks F, H, and G, oap piece I, and journal-standards K K, shaft L, pulleys M and N, ropes O and A', and dropbloek R, a11 substantially as and for the purpose specified.

` In a drop-press, the combination of the former B', having beveled or rounded corners 15 b b, and punch or block O', conformingin shape to the interior surface of the bucket to be swaged, substantially as and for the purpose specified.

In testilnony Whereof I' affix my Signature in 20 presence of two witnesses.

CHARLES J. VVILLIAMS.

YVtnesses:

O.) T. BENEDICT, J As. B. ERWIN. 

